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PATENTE@ James D- Irvin 3v B13/Son lgSeward..

JAN 28 |868 @inittab tstea glatrut @ffifhf JAMES D. IRVIN, OF GORYDON, AND BRYSON I. SEWARD, 0F- BLO0M- IN GTON, INDIANA.

.Letters 'Patent No. 73,896, dated January 28, 1868.

ALARM .FR GRIS'IFMILLS.

'IO WIIOM IT MAYCONCERN:

Be it known that We, JAMES D. IFJ/IN, of Corydon, county' of Harrison, and B-RYSON I. SEWARD, of Bloomington, Muni-oe county, inthe State of Indiana, have made ner. and useful Improvements in Alarms for Grist- Mills, and other purposes; and 'we hereby declare the following to be a full and exact description of the same, reference being had to the drawings that accompany and form a part of these specifications.

The object ot our invention is to provide a machine that will, when attached to a grist or flour-mill, insure each persons flour from his own wheat, by ringingl the bell at any given time, indicating that the grist is out.

Figure 1, perspective View.

Figure, sectional View, showing one side of the-machine, the other being aduplioate ofthe same.

Figure 3, plan view, showing position ofthe parts when in and. out of gear.

Letter A, platform or bed-plateg letter B, movable standards or frame pivoted to the bed-plate, and supporting a bevelled wheel; letter C, bevelled wheel; letter D, adjustable arm attached to the bevelled wheel C;

letter E, trigger by which the wheel C lis thrown out of gear, its lower en d also forming a stop, r, by which it is kopt in gear when desired; letter F, lever by which the machine is put in gear; letter G, bell; letter z, hammer on the shank x, on which are several points, it', indicating the number of strokes that will be given on the bell; letter K, frame attached to the bed-plate in which the running-gear is situated; letter L, pulleyr attached to a horizontal shaft. Axed also to this shaft is a perpetual screw, j, which moves the wheel m; this in its turn operates the wheel 1t. On the end of the shaft supporting the latter is a small bevelled wheel that operates the wheel C. I Letter p, spring by which the bevelled wheels C are thrown back when out of gear.

The manner'ot' operating is this: Adjust the arm D on the wheel C so that it will press ou the trigger E at the expiration of the time required for the flour to pass through the bolt.V Put itin gear by pulling the lever F. It'will now run until the arm D comes in contact with the points on the shank of the hammer; this gives the alarm, the number of blows struck on the-bell corresponding with the number of points on the shank. The arm D now presses ou the trigger and' throws the wheels out of gear. The wheel C is carried back by the coiled spring s to its original position or starting-point. The stop t, coming in contact with the lower part of the frame B, prevents it going past that point.

In different mills the time required to carry the our fromthe stones through the bolt dilfers. The adjustable arm D enables us to regulategthe time of its running to suit the various mills, and when once adjusted need not be changed. v

The parts referred to above are duplicated, thus formingA a double alarm.

What'we claim, and desire to secure by Letters Patent, is-

1, The movable standards or frames B, the Wheels C, provided with the adjustable arms D and stops t, substantially asV and for the purposes specified.

2. The triggers E, providedwith the stops r, the springs p, acting upon therwhecls C, for the purposes sot forth.

3. The combination ofthe running-gear with the Wheels C, provided with the adjustable arms D and shanhs fr: oi' hammers 71, furnished with points t' z' z`, the whole forming a double alarm for mills, substantially as herein described.

In testimony whereof, we have signed cur names-to this specification in the presence of two subscribing witnesses. 4

JAMES D. IRVIN, BRYSON I.' SEWARD.

Witnesses:

G. W. WALKER, J. GLAN McPHnETnRs. 

